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Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Within DoD, biological fouling is a problem in U.S. Navy ships and submarines (heat exchangers, condensers and seawater piping systems) and for the U.S. Army Corps of Engineers (dams, locks, and hydroelectric plants). Biofouling adversely effects system performance by decreasing heat transfer and blocking the flow of water. Chlorination is an effective antibiofouler, but has negative environmental impacts and does not meet federal and state regulations. Biofouling of heat exchangers and piping...
Topics: DTIC Archive, PHOENIX SCIENCE AND TECHNOLOGY INC CHELMSFORD MA, *ACOUSTICS, *FOULING, *FOULING...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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A mathematical model for predicting the inertial properties of a human body in various positions was developed. Twenty-five standard anthropometric dimensions are used in the model to predict an individual's center of gravity, moments and products of inertia, principal moments, and principal axes. The validity of the model was tested by comparing its predictions with experimental data from 66 subjects. The center of gravity was generally predicted within 0.7 inches and moments of inertia within...
Topics: DTIC Archive, AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH, *MATHEMATICAL...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Diesel engines are widely used throughout the Department of Defense (DoD) for powering tactical and non-tactical vehicles and vessels, off-road equipment, engine generator sets, aircraft ground-support equipment, and a variety of other applications. Current and proposed air pollution regulations are expected to impact the use of these diesel engines. Current catalyst technology is capable of reducing particulates, carbon monoxide and hydrocarbons (HCs). No satisfactory solution currently exists...
Topics: DTIC Archive, AIR FORCE RESEARCH LAB TYNDALL AFB FL, *CATALYSIS, *DIESEL ENGINES, *NITROGEN OXIDES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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This book is a monograph on the statistical theory of radar. It consists of two volumes. In the first volume the basic problems of the theory of detection are expounded, in the second--the problems of radar measurements and sev eral problems on target resolution. Methods for analysis and synthesis of radar systems are treated, as are many results and rules obtained by these methods. The book is designed for teachers and those acquainted with the basic aspects of the theories of probability and...
Topics: DTIC Archive, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSONAFB OH, *RADAR, *RADAR SIGNALS, *STATISTICAL...
A field demonstration was conducted to assess the performance of three field analytical methodologies for the presence and/or concentration of nitrocellulose (NC) and nitroglycerine (NG) in soils as well as wood and concrete building materials collected at Badger Army Ammunition Plant (BAAAP) in Baraboo, WI. Acetone extracts of soils, concrete material, and wood samples were analyzed by each of the on-site methods and results compared to off-site laboratory analysis using high performance...
Topics: DTIC Archive, BADGER ARMY AMMUNITION PLANT BARABOO WI, *CONTAMINATION, *NITROCELLULOSE,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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This project integrated an innovative robotic tow vehicle with industry standard Digital Geophysical Mapping (DGN) sensors and advanced geo-location positioning equipment to autonomously map target areas. The principle DGM tow vehicle is the Segway Robotic Mobility Platform (RMP) 4 wheel RMP 400 ATV configuration. Robot positioning is provided to centimeter accuracy by a commercial integrated DGPS/INS solution, the Novatel SPAN system with the high precision Honeywell HG1700 AG58 gyro. Trailer...
Topics: DTIC Archive, CORPS OF ENGINEERS HUNTSVILLE AL, *DIGITAL MAPS, *GEOPHYSICS, *MAPPING, *ROBOTICS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Research results obtained in the foremost laboratories of the Soviet Union working on the problem of hypoxia and adaptation of the organism to it are presented. Questions of the comparative physiology of adaptation and acclimatization of the organism to the high-mountain climate are illuminated, contemporary concepts of the significance of the cell chemical mechanism in the process of adaptation to hypoxia are set forth, and data are presented on the importance of hypoxemia in the pathology of...
Topics: DTIC Archive, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *HYPOXIA, ACCLIMATIZATION,...
The Department of Defense (DoD) manages over 577,500 buildings and structures. As the USA s single largest energy consumer, the DoD needs to reduce its carbon footprint and lower its demand for energy and water. Buildings with roofs more than 25 years old generally need to upgrade the roofs and insulation, ventilation and rainwater/drainage systems to meet current standards. The goal of this project was to determine if the dynamic integrated retrofit metal roofing system illustrated below could...
Topics: DTIC Archive, METAL CONSTRUCTION ASSOCIATION INC CHICAGO IL, *METALS, *RETROFITTING, *ROOFS, *SOLAR...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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A number of improvements and advances for the enhanced in situ bioremediation of chlorinated solvents have been made since the Tri-Services Principles and Practices of Enhanced Anaerobic Bioremediation of Chlorinated Solvents guidance document was released in August 2004 (Air Force Center for Engineering and the Environment [AFCEE] et al., 2004). Numerous demonstration and full-scale applications have been completed, yet challenges to successful implementation of the technology remain (Simpkin...
Topics: DTIC Archive, PARSONS INFRASTRUCTURE AND TECHNOLOGY GROUP INC PASADENA CA, *ANAEROBIC PROCESSES,...
Monitored natural attenuation (MNA) and enhanced in situ bioremediation (EISB) remedies hold the promise of reducing the costs associated with cleanup of Department of Defense (DoD) sites impacted by chlorinated solvents. However, there are many DoD sites where tetrachloroethene (PCE) and trichloroethene (TCE) are only undergoing partial dechlorination to cis-1,2- dichloroethene (cDCE), even when sufficient electron donor is present or added. As a result, there are a significant number of...
Topics: DTIC Archive, GEOSYNTEC CONSULTANTS LAWRENCEVILLE NJ, *AEROBIC BACTERIA, *BIODEGRADATION,...
Defense Technical Information Archive
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The frequency of detection of wide-spread, low concentration perchlorate impacts to groundwater has been increasing as regulators nationwide require perchlorate analysis as part of regional groundwater monitoring programs, even for areas not known for military activities involving propellants. While impacts from natural sources and mechanisms may explain some cases, other cases may result from long-term, non-military-based inputs, potentially including: explosives; road flares; environmental...
Topics: DTIC Archive, GEOSYNTEC CONSULTANTS LAWRENCEVILLE NJ, *GROUND WATER, *PERCHLORATES, BLEACHING...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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This work presents a methodology to design an alternate meta-material that can provide some of the desired properties of tank track pads while eliminating or reducing the hysteresis losses of elastomer. To determine the requirements for linear elastic meta-materials, dynamic analyses of a rollover event are conducted on a simplified but representative finite element model of a backer pad. From these analyses, the complex dependence of the strain history on different strain components is...
Topics: DTIC Archive, CLEMSON UNIV SC, *METAMATERIALS, MODULUS OF ELASTICITY, OPTIMIZATION, TANKS(COMBAT...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Topics: DTIC Archive, ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI, *COMPUTER...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Blast energy-attenuation (EA) seats, although not new to the market, have not been fully characterized with respect to energy attenuation capability and the resulting effects on occupant protection. The U.S. Army - Tank Automotive Research, Development and Engineering Center (TARDEC) Ground Systems Survivability (GSS) Interiors Seat Team tested and evaluated EA seats over a one-year period using a drop tower test method. Data from three different anthropomorphic test devices (ATDs, or crash...
Topics: DTIC Archive, ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI, *SEATS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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This report contains theoretical and experimental studies related to the failure phenomena in polymeric materials. A new engineering failure theory is developed and described. This theory takes into consideration general, miltiaxial viscoelastic loading conditions. The theory can be used to predict failure under multiaxial stress conditions if the uniaxial viscoelastic failure envelope is known. A viscoelastic stress analysis of the poker-chip specimen is presented. This analysis is needed in...
Topics: DTIC Archive, CALIFORNIA INST OF TECH PASADENA, *VISCOELASTICITY, *FAILURE(MECHANICS), PRODUCTION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Full-vehicle, End-to-End under-body blast(UBB) simulations with LS-DYNA have been common practice at the Tank Automotive Research, Development and Engineering Center (TARDEC) for the last several years to support Program Managers in the Army Acquisition of military ground vehicles. Soil, which is one of the four key components (with air, charge, and vehicle structure being the others), has been represented in these simulations by an Elastic-Plastic Hydrodynamic (EPH)2 model. EPH models has been...
Topics: DTIC Archive, ALTAIR ENGINEERING INC TROY MI, *BLAST, *SOIL MECHANICS, *SOIL MODELS, COMPUTERIZED...
This is the second in a series of two technical notes that evaluate the capability of the Lindorm Inc. SediMeter(trademark). The SediMeter utilizes infrared optical backscatter (OBS) detectors to determine the location of the sea/river/lake bottom. The previous technical note (ERDC TN-DOER T11, Perkey and Wadman 2013) presented results of laboratory tests performed to assess the instrument s accuracy. That technical note concluded that the SediMeter was not able to reliably record bed elevation...
Topics: DTIC Archive, ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB, *INFRARED...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The benefits of Software-Defined Networking (SDN), when fully realized, offer many improvements over the current rigid and complex networking paradigm. By virtue of separating the control plane from the forwarding devices and handing its control over to a centralized external device, SDN removes many obstacles to networking innovation and research. OpenFlow protocol is a key enabler of SDN and provides a centralized control channel for effective state management. Simplified and centralized...
Topics: DTIC Archive, ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD COMPUTATIONAL AND INFORMATION SCIENCES...
Defense Technical Information Archive
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A nonlinear continuum phase field theory is developed to describe amorphization of crystalline elastic solids under shear and/or pressure loading. An order parameter describes the local degree of crystallinity. Elastic coefficients can depend on the order parameter, inelastic volume change may accompany the transition from crystal to amorphous phase, and transitional regions parallel to bands of amorphous material are penalized by interfacial surface energy. Analytical and simple numerical...
Topics: DTIC Archive, ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Previous experiments on the rf impedance between two probes immersed in a plasma, and on the incremental dc characteristics of an rf modulated probe, have suggested that resonance effects occur at the local electron plasma frequency, omega sub p, and can be interpreted to obtain a direct measurement of electron density, free from many of the errors to which conventional Langmuir probe techniques are prone. A simplified model which gives predictions agreeing well with experiment is presented....
Topics: DTIC Archive, STANFORD UNIV CA MICROWAVE LAB, *ELECTROMAGNETIC PROBES, *MEASURING INSTRUMENTS,...
Nanostructured Cu-Ta alloys have shown promise as high-strength nanocrystalline materials in part due to their limited grain growth at high temperatures. In the present study, Cu Ta alloy powders, synthesized via high-energy cryogenic mechanical alloying, were consolidated into bulk nanostructured specimens using equal channel angular extrusion (ECAE) at high temperatures. Subsequent microstructure characterization indicated full consolidation, which resulted in an equiaxed grain structure for...
Topics: DTIC Archive, ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH...
Defense Technical Information Archive
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Capacitance-voltage measurement was utilized to characterize impurities in the non-intentionally doped region of Type-II InAs/GaSb superlattice p-i-n photodiodes. Ionized carrier concentration versus temperature dependence revealed the presence of a kind of defects with activation energy below 6meV and a total concentration of low 1015 cm 3. Correlation between defect characteristics and superlattice designs was studied. The defects exhibited a p-type behavior with decreasing activation energy...
Topics: DTIC Archive, NORTHWESTERN UNIV EVANSTON IL OFFICE OF RESEARCH SPONSORED PROJECTS, *IMPURITIES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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With the proliferation of physical military and commercial sensors, and increasing use of open source social media data for situation understanding, traditional stove-piped exploitation solutions no longer achieve required accuracy in a timely manner. Alternatively, the new cloud technologies are not appropriate for situation understanding in areas of denial, where computation resources are limited, data not easily moved around, and communication highly constrained and unreliable. D-SPACE is a...
Topics: DTIC Archive, APTIMA INC WOBURN MA, *DISTRIBUTED COMPUTING, *INFORMATION PROCESSING, ALGORITHMS,...
Defense Technical Information Archive
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Mission Assurance, Threat Alert Disaster Resiliency and Response (MATADRR) is USNORTHCOM's joint initiative to enhance automated information sharing and mission assurance by establishing information sharing interfaces across currently stove piped unclassified emergency management/force protection applications. Its goal is to quickly disseminate time-critical incidents, imminent threats, and/or hazard information within the USNORTHCOM Domestic Area of Responsibility to streamline information...
Topics: DTIC Archive, SPACE AND NAVAL WARFARE SYSTEMS CENTER PACIFIC SAN DIEGO CA, *INFORMATION EXCHANGE,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Diving is hazardous. Both the water and the increased pressure present hazards to the nervous system. Some of the neurologic manifestations of decompression sickness-air embolism, inert gas narcosis, and oxygen toxicity--have been described. A few of the marine life hazards have been mentioned that are toxic to the nervous system. Careful diving technic combined with knowledge of the potential sources of danger should permit safe diving without embarrassment to the nervous system. Carelessness...
Topics: DTIC Archive, STATE UNIV OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE, *NERVOUS SYSTEM, *DIVING,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Welcome to the INCOSE Systems Engineering Measurement Primer. This primer is not intended to be a tool, a case study, or a guideline. It is a basic introduction to measurement for the beginning measurement practitioner in systems engineering. It is written from the perspective that the reader is not familiar with measurement jargon, does not know the general philosophies shared by many measurement practitioners, or has no experience selecting, specifying, and using measures. This Primer will...
Topics: DTIC Archive, INTERNATIONAL COUNCIL ON SYSTEMS ENGINEERING SEATTLE WA, *SYSTEMS ENGINEERING, CASE...
Defense Technical Information Archive
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A great deal of effort has been expended in connection with the use of digital computers to play chess and checkers. The most successful has been the checker-playing program of Samuel. It is of some interest then to indicate how the theory of dynamic programming can be used to determine optimal play in the great majority of Pawn-King end-games in Chess, with computers currently available, and in all probability, to determine optimal play for the entire game of checkers. The basic methods are...
Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *DIGITAL COMPUTERS, BOUNDARY VALUE PROBLEMS, COMPUTER...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The one-dimensional, steady state structure of a shock wave in a partially ionized gas is investigated using the Navier-Stokes equations for the atom, electron, and ion fluids. The plasma is assumed quasi-neutral without a change in ionization across the shock. An experimental measurement in partially ionized hydrogen of the variation of potential in a strong shock gives a shock thickness and a potential rise across the imbedded shock in good agreement with the calculated values.
Topics: DTIC Archive, MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID MECHANICS LAB, *PLASMAS(PHYSICS),...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Neurofibromatosis type 2 (NF2) is caused by inherited or sporadic mutations in the NF2 gene, and NF2 patients are highly prone to developing bilateral vestibular schwannomas or meningiomas. NF2 encodes two alternatively spliced forms, merlin-1 and merlin-2, which differ at their C-termini. Merlin belongs to ERM (ezrin-radixin-moesin) family of proteins that localize to adhesion complexes, bind to cell surface receptors and the actin cytoskeleton and, accordingly, play important roles in...
Topics: DTIC Archive, SCRIPPS RESEARCH INST LA JOLLA CA, *MEMBRANES, *MUTATIONS, *PERIPHERAL NEUROPATHY,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The contents of the report relate the test programs and results therefrom of the RAT SCAT research and development program instigated to investigate the measuring fields as a function of range geometry, and measurement accuracies, of the RAT SCAT cross section measurement facility. A model for the field over the target region involving antenna height, antenna size, target height, frequency and distance to the target is presented along with appropriate measured data. These models are in most...
Topics: DTIC Archive, GENERAL DYNAMICS CORP FORT WORTH TX, *RADAR CROSS SECTIONS, BACKGROUND, CALIBRATION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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TH-17 cells are a newly discovered CD4 helper T-cells that produce interleukin-17A (also known as IL-17). IL-17 is found in Rheumatoid Arthritis (RA) synovial tissue and fluid, and the percentage of TH-17 cells is significantly higher in RA synovial fluid compared to RA or normal peripheral blood (1, 2). IL-17 has been shown to have a profound effect in experimental models of arthritis however its role in Rheumatoid Arthritis is undefined. Angiogenesis is an early and a critical event in the...
Topics: DTIC Archive, ILLINOIS UNIV AT CHICAGO, *ANGIOGENESIS, *ARTHRITIS, *RHEUMATIC DISEASES, ACTIVATION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The Integrative Cardiac Health Program (ICHP) aims to understand the complex interactions of numerous molecular components that characterize individuals or populations at risk for cardiovascular disease (CVD). We are working to identify molecular networks that define cardiovascular risk and correspond to lifestyle changes that may influence the trajectory of disease progression. Given the increasing trends of major CVD risk factors in the US military population and potentially devastating...
Topics: DTIC Archive, WINDBER RESEARCH INST PA, *CARDIOVASCULAR DISEASES, *GENETICS, *STRESS(PHYSIOLOGY),...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The hormonal milieu influences immune tolerance as well as the immune response against viruses and cancer, but the direct effect of androgens on cellular immunity remains largely uncharacterized. We therefore sought to evaluate the effect of androgens on murine and human T cells in vivo and in vitro. We found that murine androgen deprivation in vivo elicited RNA expression patterns conducive to interferon signaling and T cell differentiation. Interrogation of mechanism showed that testosterone...
Topics: DTIC Archive, BETH ISRAEL DEACONESS MEDICAL CENTER BOSTON MA, *PROSTATE CANCER, ANDROGENS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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In the eleventh quarter of the work effort, we focused on a) conducting experiments on realworld data sets using the developed algorithms, b) continued design/implementation of the Multiscale Heat-Kernel Coordinates (MHKC) algorithms with function estimation and c) packaging for releasing the software as open source. This report documents algorithm designs for the MHKC algorithms for visualization and function estimation. The project is currently on track--in the upcoming final quarter, we will...
Topics: DTIC Archive, APPLIED COMMUNICATION SCIENCES BASKING RIDGE NJ, *ALGORITHMS, *KERNEL FUNCTIONS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Owing to the health threat of perchlorate contamination of groundwater, we have reformulated pyrotechnic compositions used in spectrally balanced decoy flares, as well as in red, green, and yellow signal flares so as to remove the perchlorate ingredient while still maintaining performance characteristics that meet or exceed those of the in-service devices. The perchlorate-free decoy flare composition chosen for scale-up was successful in matching the spectral ratio and infrared emission...
Topics: DTIC Archive, NAVAL SURFACE WARFARE CENTER CRANE DIV IN, *PERCHLORATES, *PYROTECHNICS, CHEMICAL...
Defense Technical Information Archive
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A report is given on the application of techniques and the use of computer facilities in automating research in the Decision Sciences Laboratory. Applications are divided into six categories; (1) real-time control of experimental tasks performed by human subjects, (2) statistical analysis of experimental data, (3) stimulation and sensitivity analyses, (4) studies in information retrieval, (5) techniques for improving the man/computer interface, and (6) computer-based personnel selection,...
Topics: DTIC Archive, ELECTRONIC SYSTEMS DIV HANSCOM AFB MA, *COMPUTERS, *LABORATORIES, CONTROL SYSTEMS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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This report summarizes an effort carried out at the Naval Surface Warfare Center Panama City (NSWCPC) under SERDP funding to develop a performance prediction capability for sonar against UXO. This development built upon existing sonar performance prediction software (PCSWAT) developed to aid sonar design for underwater mine-countermeasure purposes at NSWCPC. The wide variety and distribution of UXO required a number of scientific issues to be resolved in order to update PCSWAT appropriately....
Topics: DTIC Archive, NAVAL SURFACE WARFARE CENTER PANAMA CITY DIV FL, *SONAR, *UNDERWATER ORDNANCE,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The Environmental Security Technology Certification Program funded the Naval Explosive Ordnance Disposal Technology Division to carry out an underwater, low-order detonation study, Project # 200104. The goal of the project was to develop for civilian UXO companies an alternative means to Blow-in-Place (BIP) procedures for submerged unexploded ordnance (UXO) that was unsafe to move. BIP has been a cause for concern because of the acute environmental damage caused by underwater detonations. The...
Topics: DTIC Archive, NAVAL EXPLOSIVE ORDNANCE DISPOSAL TECHNOLOGY DIV INDIAN HEAD MD, *BLAST, *UNDERWATER...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Topics: DTIC Archive, DEFENSE ACQUISITION UNIV MIDWEST REGION KETTERING OH, *MILITARY PROCUREMENT,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The Augmented Reality Mentor is a 2-yr advanced development effort seeking to demonstrate the training potential of integrating visual augmented reality (AR) with virtual personal assistant (VPA) technology. The training demonstration venue is basic maintenance training for the Army's Bradley Fighting Vehicle (BFV). This report is a high level assessment of the AR Mentor's potential as of the end of the first year of effort. BFV maintenance students, BFV instructors, and non-BFV mechanics felt...
Topics: DTIC Archive, SRI INTERNATIONAL MENLO PARK CA, *LEARNING, *PERFORMANCE(HUMAN), *TRAINING, ACCURACY,...
Defense Technical Information Archive
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This report documents and presents the results and theory of both Infrared Reflectance Imaging Technique (IRRIT) and Blackbody Illumination Methods, which produce high fidelity images of corrosion and other structural defects under coatings. The technology exploits the difference in infrared (IR) reflection properties between corroded and non-corroded metallic surfaces. The IR energy passes directly through the coating and then reflects off the metallic substrate back through the coating and...
Topics: DTIC Archive, NAVAL AIR SYSTEMS COMMAND JACKSONVILLE FL, *COATINGS, *CORROSION, *INFRARED IMAGES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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All Department of Defense (DOD) military services use a 2.75-inch rocket system, produced by a conventional batch method that produces large amounts of waste propellant, nitroglycerin, and process water, and are labor intensive. This project sought to demonstrate a lower cost manufacturing process that reduces the amount of waste and pollution generated in the manufacture of the Mk 90 double-base propellant grain used in the Mk 66 2.75-inch rocket system. The new process explored the use of a...
Topics: DTIC Archive, NAVAL SURFACE WARFARE CENTER INDIAN HEAD DIV MD, *MANUFACTURING, *POLLUTION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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This document reports the results of a three year program funded by the Strategic Environmental Research and Development Program (SERDP) to research, develop, and demonstrate military coatings systems that are hexavalent chromium free and use primers and topcoats with ultra low volatile organic compound (VOC) content while maintaining high protection against corrosion and the environment, high durability, high performance, and low cost. Military coatings systems typically combine a pretreatment...
Topics: DTIC Archive, ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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In 1999 an effort was begun to evaluate the efficacy of a production size aluminum-manganese molten salt plating system. The technology was previously demonstrated at a smaller scale through efforts overseen by Naval Air Warfare Center, Warminster and Naval Air Systems Command, Patuxent River. The effort begun in 1999 culminated in a 200-gallon demonstration system installed at Naval Air Depot North Island. In mid-September 2005 the aluminum manganese plating system located at the depot was...
Topics: DTIC Archive, NAVAL AIR SYSTEMS COMMAND PATUXENT RIVER MD MATERIALS ENGINEERING DIV, *ALUMINUM,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The SERDP Program CP 1132 was started in FY99 to develop a combustion system for the treatment of shipboard generated oily and non-oily wastes, which have to be disposed in an environmentally acceptable manner according to International Maritime Organization (IMO) regulations. To comply with IMO MARPOL ANNEX 1 and 6 (proposed), on-board thermal destruction (incineration) in compact, efficient, and continuously monitored combustion devices may be required to avoid the high cost of storage,...
Topics: DTIC Archive, NAVAL AIR WARFARE CENTER WEAPONS DIV CHINA LAKE CA, *COMBUSTORS, *SLUDGE, *WASTE...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Research is summarized on work in the following four areas: (1) central nervous system, peripheral physiologi cal endocrinological and psychological responses of body and field oriented subjects to experimental situations characterized by uncertainty, social and sensory isolation and limitation of movement; (2) analysis of personality, physiological and central nervous system correlates of body and field perceptual modes and the exploration of other individual determinants of the response to...
Topics: DTIC Archive, DUKE UNIV DURHAM NC SCHOOL OF MEDICINE, *PSYCHOLOGICAL TESTS, PAIN, DRUGS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The main objective of this SERDP SEED project was to demonstrate the feasibility of preparing the hexaazaisowurtzitane cage in a form that is efficiently directly nitrolyzable to CL-20 without a requirement for expensive benzylamine starting material or heavy metals, including palladium, involved in its production. We applied a known chemical transformation, base-catalyzed isomerization of allylamines into 1-propenylamines, to the recently reported hexaallylhexaazaisowurtzitane to prepare...
Topics: DTIC Archive, NAVAL AIR WARFARE CENTER WEAPONS DIV CHINA LAKE CA RESEARCH AND ENGINEERING GRP,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Tests were performed in a free-surface water tunnel to determine the ventilated-drag characteristics of truncated torpedo models. The streamlined, fully wetted model used for comparison in the experiments was a body of revolution with a fineness ratio of 8 : 1 and a diameter of 2 inches. The drag based on body volume for most of the vented, truncated models was equal to the drag of the streamlined, fully wetted model. One particular model, with a short, boattailed afterbody, was the best of the...
Topics: DTIC Archive, NAVAL ORDNANCE TEST STATION CHINA LAKE CA, *DRAG, *TORPEDO MODELS, ANGLE OF ATTACK,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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In industrial process control and environmental compliance monitoring, graphite furnace atomic absorption (GFAA) spectroscopy and inductively coupled plasma (ICP) mass spectroscopy have been traditionally used to measure trace metals. These instruments are large, expensive, and require a high level of infrastructure support. Because of this, trace metal measurement usually involves sampling, preservation, and transport to a centralized laboratory for later analysis. Current field tests for...
Topics: DTIC Archive, SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA ENVIRONMENTAL SCIENCES BRANCH...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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We report on the magnetoresistance characteristics of one-dimensional electrons confined in a single InAs quantum well sandwiched between AlSb barriers. As a result of a nanofabrication scheme that utilizes a 3-nm-shallow wet chemical etching to define the electrostatic lateral confinement, the system is found to possess three important properties: specular boundary scattering, a strong lateral confinement potential, and a conducting channel width that is approximately the lithography width....
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *CHANNELS, *QUANTUM THEORY, BALLISTICS, BARRIERS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Low-injection minority carrier lifetimes (MCLs) and deep trap spectra have been investigated in n 4H-SiC epilayers of varying layer thicknesses, in order to enable the separation of bulk lifetimes from surface recombination effects. From the linear dependence of the inverse bulk MCL on the concentration of Z1/Z2 defects and from the behavior of the deep trap spectra in 4H-SiC p-i-n diodes under forward bias, we conclude that it is Z1/Z2 alone that controls the MCL in this material.
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *MATERIALS SCIENCE, BIAS, CHEMICAL STABILITY,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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We consider the problem introduced by rotation in the use of early-type stars as calibrators for optical interferometry. These objects have high surface brightnesses and hence are relatively bright, even with small angular diameters. However, rotation can introduce changes in the predicted visibilities well in excess of the uncertainties in the various diameter-magnitude-color calibrations. Measurements of the projected rotational velocity constrain these effects, but the constraints are...
Topics: DTIC Archive, NAVAL OBSERVATORY WASHINGTON DC, *GROUND BASED, *INTERFEROMETRY, *ROTATION, COLORS,...
At DoD sites, perchlorate has been used as the oxidizer component and primary ingredient in solid propellant for rockets and missiles. Perchlorate is exceedingly mobile in aqueous systems and can persist for many decades under typical ground and surface water conditions. It has been found in groundwater, drinking water, and soils, mainly in the southwestern United States, at levels ranging from 8 to 3700 ppb. Perchlorate affects the thyroid gland by blocking iodine uptake resulting in lower...
Topics: DTIC Archive, SPACE AND NAVAL WARFARE SYSTEMS CENTER PACIFIC SAN DIEGO CA, *ANIONS, *GROUND WATER,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Contaminants enter shallow coastal waters from many sources, including ships, shoreside facilities, municipal outfalls, spills, and non point-source runoff. Sediments are typically considered a primary sink for these contaminants. Sediments in many bays, harbors and coastal waters used by DoD are contaminated with potentially harmful metal and organic compounds. The DoD is required by the Comprehensive Environmental Resource Conservation and Liability Act, as amended by the Superfund Amendment...
Topics: DTIC Archive, SPACE AND NAVAL WARFARE SYSTEMS CENTER PACIFIC SAN DIEGO CA, *CONTAMINANTS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The Total Copper Analyzer (TCA) for rapid in situ characterization of effluent discharges is the first instrument capable of continuous real-time measurement of total recoverable copper at environmentally relevant concentrations. Copper is a priority pollutant and regulatory programs require measurement of total recoverable copper. The TCA is a continuous-flow system that includes in-line acidification, digestion, and measurement of copper with a specialized jalpaite copper ion-selective...
Topics: DTIC Archive, SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA, *COPPER, *EFFLUENTS, *ION...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The topics presented on signal estimation include (1) generalized least squares estimates (2) the linear case with an infinite set of parameters (3) recursive solutions of signal estimation problems and (4) areas of future research.
Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *RADAR SIGNALS, *SIGNALS, COMMUNICATION AND RADIO SYSTEMS,...
A team of scientists and engineers from the federal government, industry, and academia is evaluating the ability of digital radar systems to identify and track biological targets and then validating these systems under realistic operational conditions. The eBirdRad radar unit utilizes off the shelf X-band marine radar coupled with advanced digital signal processing and tracking algorithms to process target information. The overall objectives of the IVAR project include: 1) the use of...
Topics: DTIC Archive, SPACE AND NAVAL WARFARE SYSTEMS CENTER PACIFIC SAN DIEGO CA, *AUTOMATIC TRACKING,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Mechanisms associated with the corrosive attack of refractory metal alloys and superalloys by liquid cesium have been investigated. The superalloys, Haynes-25 and TD-Nickel, were exposed at 1800F and the refractory metal systems, Mo-1/2Ti, Cb-1Zr, Ta-10W and Cb-25Ta12W-1/2Zr were exposed at 2100F and 2500F. Pure nickel and pure zirconium were employed as dissimilar metal additions in some tests. Boiling reflux tests of each alloy candidate were performed. In the case of the refractory alloys,...
Topics: DTIC Archive, MSA RESEARCH CORP CALLERY PA, *CORROSION, *CESIUM, *LIQUID METALS, *CORROSIVE...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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In contrast to investigating the educational effects of mobile devices on students, this research aimed to investigate the potential utility of supplying instructors (rather than students) with mobile devices to be used in conducting training. Following a review of the state of mobile devices development and potential mobile applications, a suitable tablet was selected and provisioned with apps. U.S. Army Infantry Advanced Leaders Course instructors utilized the tablets during three separate...
Topics: DTIC Archive, ARMY RESEARCH LAB FORT BELVOIR VA, *ARMY TRAINING, *MOBILE COMPUTING, ARMY, DECISION...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Contents: Historical review; Theoretical model for determining collision efficiencies; Effects of electrostatic forces on the collision efficiency of a pair of drops; Theoretical aspects and experimental observations of the coalescence process.
Topics: DTIC Archive, ILLINOIS UNIV AT URBANA CHARGED PARTICLE RESEARCH LAB, *AEROSOLS, *DROPS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The PHELIX Liner Demonstration Experiment (PLD-1) took place in September of 2010 at Los Alamos National Laboratory. The PHELIX machine consists of a 500 kJ single-marx capacitor bank cable-coupled to a toroidal 1:4 current step-up transformer which delivers multi-Mega- Ampere currents to a cm size load. In this experiment the load consisted of a 3 cm radius, 0.8 mm thick, 3 cm tall aluminum liner, copper glide planes, a thin polyethylene insulator, and a 0.5 cm thick aluminum return conductor....
Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *MACHINES, CAPACITORS, ELECTRIC CURRENT, RADIOGRAPHY,...
The original scope of this project involved demonstration and validation of the use of electron shuttles compounds for the oxidative biodegradation of cis-1,2- dichloroethene (cis-DCE) and vinyl chloride (VC). As results from the treatability study using radiolabeled vinyl chloride were not encouraging, the project was cancelled. Since this project was not completed as planned, this final report does not the follow the standard Environmental Security Technology Certification Program (ESTCP)...
Topics: DTIC Archive, NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA ENGINEERING SERVICE CENTER,...
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Topics: DTIC Archive, OKLAHOMA UNIV RESEARCH INST NORMAN, *ABSTRACTS, *BIBLIOGRAPHIES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Many previous peer effects in higher education studies have assumed that peer groups form at the roommate, dorm floor, or dorm-level. Random assignment of students into squadrons at the US Air Force Academy allows us to identify the peer group with which students spend a majority of their time interacting. Using the squadron as the peer group, we find peer effects of much larger magnitude than those found in the previous literature. In separate estimations, we find for freshman students, a...
Topics: DTIC Archive, DARTMOUTH COLL HANOVER NH, *LEADERSHIP, *PEER GROUPS, DOCUMENTS, EDUCATION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The efficiency of pattern recognition is critical when there are a large number of classes to be discriminated, or when the recognition algorithm must be applied a large number of times. We propose and analyze a general technique, namely pattern recognition, that leads to great efficiency improvements in both cases. Rejectors are introduced as algorithms that very quickly eliminate from further consideration, most of the classes or inputs (depending on the setting). Importantly, a number of...
Topics: DTIC Archive, COLUMBIA UNIV NEW YORK DEPT OF COMPUTER SCIENCE, *PATTERN RECOGNITION, *REJECTION,...
Natural Attenuation Software (NAS) is a screening tool to estimate remediation time frames for monitored natural attenuation (MNA) to lower groundwater contaminant concentrations to regulatory limits and to assist in decision making on the level of source zone treatment in conjunction with MNA, using site-specific remediation objectives. NAS development is funded by Southern Division, Naval Facilities Engineering Command (NAVFAC) and Naval Facilities Engineering Service Center (NFESC), and has...
Topics: DTIC Archive, NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA ENGINEERING SERVICE CENTER,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Welcome to SampleOptimizer and SampleTracker ! SampleOptimizer represents the latest evolution in long term monitoring optimization (LTMO) software. For the first time, the power of true mathematical optimization has been applied to LTMO in an easy-to-use desktop software tool to reduce sampling redundancy. SampleOptimizer is the culmination and combination of years of research in mathematical optimization, data analysis, and environmental engineering. Experts in the fields of geology,...
Topics: DTIC Archive, NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA ENGINEERING SERVICE CENTER,...
This demonstration and validation project evaluates a soybean oil derivative (SoyGold 1000) as an alternative to high VOC containing solvent for the rinsing of aeronautical antifriction bearings during DoD Depot level maintenance cleaning. Data analysis and interpretation are based on analytical test results as well as visual inspections performed on test bearings that were processed through the bearing cleaning process. Analytical test results are mixed. SG1000 passed all environmental,...
Topics: DTIC Archive, NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA ENGINEERING SERVICE CENTER, *AIR...
The UXO Mobility Model which predicts the movement and burial of UXO in the marine environment is being demonstrated at two sites. The first demonstration is being conducted at the Army Corps of Engineers Field Research Facility in North Carolina. Demonstration design, field deployment, and preliminary results are discussed in this report. Although the FRF Duck Field Demonstration data have not yet been used to quantitatively calibrate and validate the UXO Mobility Model, the test to date has...
Topics: DTIC Archive, NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA ENGINEERING SERVICE CENTER,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The evaluation of the toxicity of Hexanitroethane was carried out through a series of sutudies including repeated vapor exposures to three air levels of four species of animals, short term exposures to saturated vapors, repeated application to the skin of rabbits and sensory responses of human volunteers. Evidence of toxicity as reflected by mortality and decreased weight gain was present in all species exposed repeatedly at levels of 3.0 ppm in the ambient air. Some evidence of physiological...
Topics: DTIC Archive, HINE LABS INC SAN FRANCISCO CA, *ORGANIC NITROGEN COMPOUNDS, HANDLING, HUMANS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The Chemistry Division of the Naval Research Laboratory has participated in several programs funded by SERDP and ESTCP whose goal is to enhance the discrimination ability of MTADS. The process is based on making use of both the location information inherent in an item s magnetometry response and the shape and size information inherent in the response to the time domain electromagnetic induction (EMI) sensors that are part of the baseline MTADS in either a cooperative or joint inversion. In all...
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC CHEMISTRY DIV, *ELECTROMAGNETIC INDUCTION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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Formulations were presented for the second quantized versions of the field theories which lead to Corben's equations of motion. It was demonstrated that an indefinite metric is required to guarantee positive energies for all the particles, but that otherwise the theories are physically unambiguous. The number and properties of the resulting particles were studied and compared with the conclusions from previous work. Alternative formulations were also discussed.
Topics: DTIC Archive, TRW SPACE TECHNOLOGY LABS REDONDO BEACH CA, *ENERGY, *EQUATIONS, *MOTION, *PARTICLES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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This report is a supplement to AD-602 121 entitled 'Marcum's and Swerling's Data on Target Detection by a Pulsed Radar.' In AD-602 121, graphed data are presented which were obtained by high speed digital calculations based on the statistical analyses of Marcum and Swerling. To accommodate those who have need for precise analytic data on radar target detection, the data which were plotted in AD-602 121 are presented here in tabulated form; and in addition, data are presented for 6000 pulses...
Topics: DTIC Archive, JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB, *TARGET DISCRIMINATION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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An important application for low impedance pulsed power drivers is creating high pressures for shock compression of solids. These experiments are useful for studying material properties under kilobar to megabar pressures. The Z driver at Sandia National Laboratories has been used for such studies on a variety of materials, including heavy water, diamond, and tantalum, to name a few. In such experiments, it is important to prevent shock formation in the material samples. Shocks can form as the...
Topics: DTIC Archive, SANDIA NATIONAL LABS ALBUQUERQUE NM, *CAPACITORS, CAVITIES, PULSES, SPARK GAPS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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A new circuit model for the Sandia Saturn generator was constructed to aid analysis of measurements from recent experiments with reflex triode loads. This configuration is easier to model than others because there are no convolutes in the vacuum region. Also, the low impedance of the reflex triode makes the amount of vacuum flow current insignificant, which also simplifies analysis. Saturn has 36 identical pulse generator modules that each drive a water transmission line output. These...
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV, *GENERATORS, ENERGY STORAGE,...
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A simple and practical apparatus was set up to measure longitudinal ultrasonic wave velocities. The method used to determine velocity is based on measuring the times required for ultrasonic pulses to travel through samples of different lengths. The method is capable of measuring velocities through samples of a few millimeters thickness with no more than 4% error. The velocities of longitudinal waves through several plastics have been determined over a range of temperatures that, in general,...
Topics: DTIC Archive, NEW MEXICO UNIV ALBUQUERQUE, *PLASTICS, *ULTRASONIC RADIATION, ACOUSTIC VELOCITY,...
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Sep 23, 2018 Defense Technical Information Center
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The rapidly changing global economy can be viewed from the shores of merging streams of geopolitical events, management trends and new ideas. Among these are recent applications of the science of complexity to social and business questions; corporate experimentation with a variety of new management concepts including so-called organizational learning, Clnd the shift from strictly competitive tactics to mixed cooperative and competitive strategies using multiple alliances for competition in...
Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *COMMERCE, *INFORMATION EXCHANGE, *RESEARCH MANAGEMENT,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The United States Air Force (Air Force) proposes to implement the Dyess Air Force Base (AFB) bird aircraft strike hazard (BASH) Plan at Dyess AFB, Texas. The BASH Plan would utilize airfield grounds maintenance and wildlife control measures to discourage and dissuade birds from gathering in the airfield and aircraft maintenance hangars. In addition to the proposed action, the Air Force analyzed the noaction alternative. Under the no-action alternative, the Air Force would not implement the...
Topics: DTIC Archive, AIR COMBAT COMMAND LANGLEY AFB VA, *AIRCRAFT MAINTENANCE, *BIRDS, *ENVIRONMENTAL...
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The action of sodium citrate and sodium borate in aqueous media on the polarization characteristics of uranium and steel was studied. The effect of citrate and borate concentration on these polarization characteristics was also studied. Steady-state corrosion currents developed by the uranium-steel couple were measured using zero-resistance ammeter circuitry, and polarization measurements were made using galvanostatic techniques. Sodium citrate and sodium borate were classified as either...
Topics: DTIC Archive, ARMY MATERIALS RESEARCH AGENCY WATERTOWN MA, *POLARIZATION, *CORROSION INHIBITION,...
Systems Engineering Research Center has developed a novel cyber security concept for embedding security solutions into systems called System-Aware cyber security. The goal of the System-Aware program is to develop low cost methods of protection against cyber exploits by our adversaries. To demonstrate the effectiveness of the System-Aware design patterns, specific ones were developed for an unmanned aerial vehicle (UAV) application. The application to UAV-based systems was inspired by the wide...
Topics: DTIC Archive, SYSTEMS ENGINEERING RESEARCH CENTER HOBOKEN NJ, *COMMAND AND CONTROL SYSTEMS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The amount of information on the world wide web has grown enormously since its creation in 1990. Duplication of content is inevitable because there is no central management on the web. Studies have shown that many similar versions of the same text documents can be found throughout the web. This redundancy problem is more severe for multimedia content such as web video sequences, as they are often stored in multiple locations and di erent formats to facilitate downloading and streaming. Similar...
Topics: DTIC Archive, CALIFORNIA UNIV BERKELEY DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The concept of an International Special Operations Forces (SOF) Coordination Center (ISCC) conceived to operationalize the vision of the Commander, U. S. Special Operations Command (USSOCOM) to strengthen the Global SOF Network (GSN) and to support its regional operational hubs. In April 2013, the Chairman of the Joint Chiefs of Staff (CJCS) issued Commander, USSOCOM a Planning Order to draft a campaign plan for providing U.S. SOF capability to the Geographic Combatant Commanders (GCCs) for...
Topics: DTIC Archive, UNITED STATES SPECIAL OPERATIONS COMMAND MACDILL AFB FL, *SPECIAL OPERATIONS FORCES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The goal of the present research was to articulate, develop and assess an object-based attention framework for researching and designing HUD symbology. The theoretical, empirical and neuropsychological foundations of an object-based attention framework are summarized and linked to research on BUD symbology. It is shown that an object-based attention framework can be used to address and examine a variety of core issues concerning the use ofHUDs in aircraft. A series of five experiments are...
Topics: DTIC Archive, CARLETON UNIV OTTAWA (ONTARIO), *CORES, *HEAD UP DISPLAYS, *HELMET MOUNTED DISPLAYS,...
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Sep 23, 2018 Defense Technical Information Center
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This EA has been prepared in accordance with the National Environmental Policy Act (NEPA) to analyze the potential environmental consequences that could result from the implementation of the Proposed Action and other alternatives being considered, including the No Action Alternative. The Proposed Action consists of constructing and operating a four-bay carwash facility that would occupy approximately 2,000 square feet with one automatic wash bay and three manual bays, as well as a closed-loop...
Topics: DTIC Archive, BOOZ-ALLEN AND HAMILTON INC MCLEAN VA, *AIR FORCE FACILITIES, AIR FORCE OPERATIONS,...
This SEA evaluates the potential environmental consequences of constructing and maintaining a wildlife fence surrounding the airfield at BAFB to (1) ensure aircraft safety, in particular along the flight line, by reducing the potential for Bird Aircraft Strike Hazard (BASH) incidents and (2) ensure the safety of installation personnel and the general public surrounding Buckley AFB. The action being proposed in this SEA will also be examined to better identify and address potential cumulative...
Topics: DTIC Archive, BOOZ-ALLEN AND HAMILTON INC MCLEAN VA, *AVIATION SAFETY, *ENVIRONMENTAL ASSESSMENT,...
This research explored the conceptual, theoretical. and practical aspects of controlling quantum electron transport in nanometer-scale solid-state electronic structures and devices. In this context, control is envisioned to include compositional design of the materials, as well as the influence of tailored external laser fields. Experiments were carried out indicating that solid-state structures may be generated to control quantum electron scattering processes. In addition, theoretical research...
Topics: DTIC Archive, PRINCETON UNIV NJ, *SOLID STATE ELECTRONICS, CONTROL THEORY, ELECTRON TRANSPORT,...
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Sep 23, 2018 Defense Technical Information Center
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According to system engineering, the command and control (C2) system comprises of two basic subsystems including technical system (TS) and organizational system (OS). It is vital to identify the essential character of the structures of the two subsystems which can impact and contribute to C2 Agility. This paper discussed the essential structures of C2 system as well as the interaction logics to C2 agility. Typically, the TS is a net based structure with lots of TS nodes (TSNs) widely connected...
Topics: DTIC Archive, CHINESE INST OF COMMAND AND CONTROL BEIJING (CHINA), *COMMAND AND CONTROL SYSTEMS,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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The dynamical equations of motion are formulated for a body during re-entry into the atmosphere. With the assumption that the translational and rotational degrees of freedom may be treated independently, an analysis is undertaken of the oscillatory motion of a re-entry vehicle which is spinning about its longitudinal axis. The influence of the spin rate and the static margin upon the stability of the transient solution of the equations of motion is considered, and it is concluded that...
Topics: DTIC Archive, RAND CORP SANTA MONICA CA, *REENTRY VEHICLES, *ATMOSPHERE ENTRY, *AERODYNAMIC...
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Sep 23, 2018 Defense Technical Information Center
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The physical and electronic structure of the (1 0 0), (0 1 0), (0 0 1) and (1 0 1) faces of Beta-Ga2O3 are addressed using ab initio theory. Restricted Hartree-Fock calculations, with large-core Ga and O pseudopotentials, are done to optimize the structure of first the bulk and then of slabs cut in the required orientations. The slab unit cells are fully relaxed during optimization, and the displacements of all atoms from the ideally-terminated positions are obtained as functions of depth into...
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *ELECTRONICS, *PHYSICAL PROPERTIES, BONDING,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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There are two areas where the research conducted under this grant was focused: (1) research on models of concurrency, and in particular on true concurrency, and (2) models for probabilistic choice. In the first area, we collaborated with Professor Paul Gastin, then of the Universite de Paris VII, over a period of years on devising domain-theoretic models to support true concurrency. This approach to modeling concurrent computation differs from the usual approach, where parallel composition is...
Topics: DTIC Archive, TULANE UNIV NEW ORLEANS LA, *INFORMATION EXCHANGE, *LAW ENFORCEMENT, *SECURITY,...
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Sep 23, 2018 Defense Technical Information Center
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To meet environmental remediation goals, there is a need for rapid, quantitative detection of hazardous pollutants such as explosives. Biosensors provide a rapid, specific, sensitive, portable, and inexpensive means to fulfill those needs. The Naval Research Laboratory has developed two methods for measuring TNT and RDX. These methods employ either the Analyte 2000 or the FAST 2000 optical instruments, both engineered by Research International (Woodinville WA) in collaboration with NRL. These...
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC CENTER FOR BIOMOLECULAR SCIENCE AND ENGINEERING,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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When the Chemical Agent Resistant Coating (CARC) system was first used on tactical equipment by the Army in the early 1980s, it was in compliance with environmental regulations in effect at that time. However, Federal and local regulations resulting form the Clean Air Act and its amendments have resulted in subsequent restriction on the amount of Volatile Organic Compounds (VOC) emitted during the application of protective coatings. Current topcoats in the CARC system have VOC limits set at...
Topics: DTIC Archive, ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ,...
Defense Technical Information Archive
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The Department of Defense (DoD) operates numerous hand grenade ranges (HGR) for training purposes. Live fire training creates a potential source zone for munitions constituents such as metals and explosives. Fragmentation grenades, typically containing Composition B (60% RDX, 39% TNT, 1% wax binder) within a steel shell casing, constitute the majority of hand grenades used at fixed position ranges. Explosives have been detected in HGR soils at levels from the low parts per billion ( g/kg) up to...
Topics: DTIC Archive, ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB, *CALCIUM...
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This work applied new investigative techniques to assess the locations, distributions, and associations of polycyclic aromatic hydrocarbons (PAHs) in dredged harbor sediment. Dredged materials from the Milwaukee Confined Disposal Facility were collected and homogenized to provide sufficient sample for four month bioslurry treatment testing and for P AH analyses on various size and density fractions before and after biotreatment. Sediment P AH analyses included both whole-sample measurements...
Topics: DTIC Archive, ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB, *AROMATIC...
The problem that these ESTCP demonstrations addressed is surface soil contaminated with petroleum, located at remote sites, covering large areas, and in cold climates. There are many such Department of Defense (DoD) sites in Alaska. These sites are generally not easily accessible, thus increasing the costs of mobilization and demobilization, have limited infrastructure to support traditional cleanup, are subject to harsh winters, causing equipment failures. Conventional cleanup strategies are...
Topics: DTIC Archive, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *SOIL REMEDIATION, BIOLOGICAL...
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UXO characterization is an important and yet challenging task for the reduction of UXO clearance cost due to the large number of false targets that often appear at UXO sites. Only metallic false targets are considered here since non-metallic objects could be easily screened out with advanced magnetic sensors which have been applied effectively in detecting UXO s up to 12 meter depth. Previous attempts from various groups in applying GPR systems for UXO classification were not satisfactory due...
Topics: DTIC Archive, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *GROUND PENETRATING RADAR,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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In this project, demonstrations were carried out for the purpose of ascertaining the buried UXO discrimination capabilities of UWB, fully polarimetric ground penetrating radar (GPR). Work concentrated on cued identification or close interrogation by GPR of signal anomaly locations that were identified by other means. The unknown buried objects were sorted into UXO and non-UXO classes and the results scored independently against closely held ground truth. The ultimate purpose of the work was to...
Topics: DTIC Archive, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *GROUND PENETRATING RADAR,...
Six-component aerodynamic data were obtained at Mach 5 and 8 for a winged re-entry configuration having aerodynamic controls. The basic model consisted of a clipped delta wing with an over-slung body. The main controls tested were a deflected apex and partial-span trailing-edge flaps. Data were also obtained on the effect of tip fins, full-span trailing-edge flap, and trailing-edge spoiler. At Mach number 5 the data were obtained over an angle of attack range from -30 degrees to +45 degrees at...
Topics: DTIC Archive, GRUMMAN AIRCRAFT ENGINEERING CORP BETHPAGE NY, *AEROSTATICS, *REENTRY VEHICLES,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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SERDP project MM-1537 entitled Handheld Frequency Domain Vector EMI Sensing for UXO Discrimination is complete. The GEM-3D+ incorporated two new aspects of EMI instrumentation with encouraging results: frequency domain vector receivers, and a beacon positioning system. This report contains the final design, engineering challenges, modeling advancements, and data analysis results from this project. This vector receiver coupled with the beacon positioning system resulted in a versatile prototype...
Topics: DTIC Archive, COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH, *ELECTROMAGNETIC INDUCTION,...
Defense Technical Information Archive
Sep 23, 2018 Defense Technical Information Center
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In this ESTCP demonstration, three wood buildings were deconstructed at Camp Roberts, CA, to salvage and reclaim valuable wood coated with lead-based paint (LBP). Because the presence of LBP normally prohibits the recycling of older wood construction materials, economic value is lost, landfilling costs compound, and virgin materials are consumed unnecessarily. Wood Waste Diversion (WWD) of Pacific Grove, CA, demonstrated a technology that mechanically removes coatings from wood, producing clean...
Topics: DTIC Archive, ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING...